investment in human capital under economic transformation in russia Daria V. Nesterova, Klara Z. Sabirianova micro 2 (household behavior)

Transcription

1 working paper series No 99/04 investment in human capital under economic transformation in russia Daria V. Nesterova, Klara Z. Sabirianova micro 2 (household behavior) economic education and research consortium russia economic research program

2 investment in human capital under economic transformation in russia Daria V. Nesterova Klara Z. Sabirianova working paper series No 99/04 december 1998 This working paper is issued under the program area Micro 2 (Household Behavior). Any opinions expressed here are those of the authors and not those of the Economic Education and Research Consortium. Research dissemination by EERC may include views on policy, but the EERC itself takes no institutional policy positions. This paper has been prepared with the support of the Economic Education and Research Consortium managed by the Eurasia Foundation (Grant # R97-206). We would like to thank Tito Boeri, Simon Commander, John Earle, Barry Ickes, Martina Lubyova and Michel Sollogub for their useful comments and suggestions at the July 97, December 97 and July 98 EERC Research Workshops. We are also grateful to Inna Maltseva for her research assistance. EERC/Eurasia Foundation

3 INVESTMENT IN HUMAN CAPITAL UNDER ECONOMIC TRANSFORMATION IN RUSSIA CONTENTS LIST OF FIGURES AND TABLES GENERAL DESCRIPTION OF THE RESEARCH PROJECT...5 OBJECTIVES OF THE STUDY...5 REVIEW OF THE LITERATURE 6 THE DATA 7 DESCRIPTION OF VARIABLES 8 THE SAMPLE STRUCTURE ESTIMATES OF PRIVATE RATES OF RETURN TO HUMAN CAPITAL...10 THE INITIAL CONDITIONS AND RETURNS TO HUMAN CAPITAL IN THE SOVIET PERIOD 10 RETURNS TO EDUCATION 10 RETURNS TO EXPERIENCE 10 EARNINGS FUNCTIONS WITH FIRM FIXED-EFFECT 10 THE EXTENDED EARNINGS FUNCTION HUMAN CAPITAL AND EMPLOYMENT ADJUSTMENTS...10 INTRODUCTION 10 EDUCATION AND UNEMPLOYMENT: THEORETICAL ISSUES 10 THE EDUCATIONAL STRUCTURE OF LABOUR MARKET TRANSITIONS 10 EDUCATION AND INCIDENCE OF UNEMPLOYMENT 10 UNEMPLOYMENT ADJUSTING THE RATE OF RETURN TO HUMAN CAPITAL 10 CORRECTING THE RATE OF RETURN TO HUMAN CAPITAL FOR ANY SAMPLE SELECTION BIAS 10 BIBLIOGRAPHY...10 APPENDICES...10

4 LIST OF FIGURES AND TABLES Table 2.1. Returns to Schooling in Transition Economies, Selected Countries, Table 2.2. Occupational Structure, by Level of Education Table 2.3. Regression Coefficients on Experience and Education, by Type of Ownership Table 2.4. Earnings Functions with Firm Fixed-Effect, Restricted Sample, Table 2.5. Earnings Functions with Region Fixed-Effect, Restricted Sample, Table 2.6. Extended Earnings Equation, Table 3.1. Effects of Schooling and Experience on Total Earnings and Hourly Wage Rates Table 3.2. Transition Probabilities from Labor Market State i to j By Education Level Table 3.3. Expected Changes of Unemployment Rates as a Result of Variations in Transitional Probabilities By Gender and Education Level Table 3.4 Determinants of Probability of being Unemployed, Table 3.5. Probit Estimates Multinomial Logit Model of Employment Transitions. Maximum Likelihood Estimates for Employment, Unemployment and Out of Labor Force Transitions Table 3.6 Weibull Regression for Duration of Unemployment, Table 3.7. Earnings Functions, Unemployment Adjusted, Table 3.8. Earnings Functions, Controlling for the Selection Bias, Table A1.1. Panel A. Employment distribution: Goskomstat and RLMS data, % Table A1.2. Descriptive Statistics of Basic Variables Tables A2.1-6 Earnings Functions With Regional Deflators Table A2.7: Gender Differences in Earnings Determinants

5 1. General description of the research project 1. GENERAL DESCRIPTION OF THE RESEARCH PROJECT OBJECTIVES OF THE STUDY Today the competitive advantages of a country and its potential for modernization are directly related to the size of accumulated human capital. People, with their education, skills and professional experience, determine the opportunities and frontiers of economic change. Investment in human capital gives an individual some sort of power over their own working life and social status, increases their individual freedom through increased mobility and extends the frontiers of their economic choice. Investment in human capital can thus be one of the most important sources of economic dynamics and growth. Investment in human capital is particularly important for Russia during the period of economic transformation. The previous centralized wage-setting system resulted in a weak correlation between wage and personal success, on the one hand, and education, on the other. It should also be noted that the previous system of education was mostly directed to the training of narrow-skilled specialists for particular industries. As a result workers were less mobile and highly attached to one job and occupation during their life-time horizon. Although the general level of schooling was relatively high, this narrow education did not provide the skills and knowledge now demanded by the market economy. The current situation in the Russian labour market is characterized by a large discrepancy between the available educational capital and the market demand for skills. All this lends increasing importance to research into human capital formation during the transition period in Russia. In this report the main attention will be given to theoretical and empirical analysis of wage determinants and returns to human capital under the economic transformation. This involves six main steps: 1. Econometric estimation of the basic earnings equations for calculating private rates of return to schooling, returns to labour market experience and returns to specific human capital (tenure). 2. Comparative analysis of rates of returns to human capital across professional and demographic groups, industries and type of enterprises from 1992 to Tracing how aggregate demands shocks during the transition period affected the returns to human capital. 5

6 Investment in human capital under economic transformation in Russia 4. Analyzing how education influences hours at work and employment adjustments, the probability of job loss and the effectiveness of job search. 5. Examining to what extent education affects an individual s transition between the various labour market states such as employment, unemployment and out-of-thelabour force (OLF). Measuring how taking account of unemployment and selection bias affects the rates of return to schooling and experience. Achieving these purposes is also important for human capital theory development because it shows a way to apply the main ideas of this theory to the fast-changing economic and social conditions under economic transformation in Russia. It allows us to test various hypotheses on the basis of the first representative population sample in Russia. REVIEW OF THE LITERATURE The idea that acquisition and development of skills embodied in human agents of production could be treated as a form of investment originated in the works of W.Petty, A.Smith and A.Marshall, who all stressed how important it is for a national economy to invest in education. At the beginning of the twentieth century, the Russian economist S.Strumilin and the English economists L.Dublin and A.Lotka presented the first empirical results of returns to education by using the discounted earnings procedure. The idea really came to the professional forefront in the late 1950s and early 1960s with the empirical results of Schultz (1961), Denison (1962) and others showing the importance of education for productivity and economic growth. All these developments were organized into a coherent theoretical structure by Becker (1975), a landmark work which raised virtually all the major questions and which in turn stimulated a vast number of studies in the area of human capital. Mincer (1958) also developed an important study. He was one of the first to apply human capital concepts directly to the personal distribution of earnings and used the standard earnings function for estimation of rates of return to education and experience. As Willis (1986) says: As an empirical tool, the Mincer earnings function has been one of the great success stories of modern labour economics. It has been used in hundreds of studies using data from virtually every historical period and country for which suitable data exist. Unfortunately, the lack of accessible Soviet micro data did not allow use of this empirical tool for investigating the educational wage differentials and returns to human capital for a long period of the Soviet system. Much of the early work on the Soviet labour market and human capital was done using highly aggregated national or regional data. This situation changed 6

7 1. General description of the research project with interviews of Soviet emigrants to the United States between 1979 and Gregory and Kohlhase (1988) use these data to study Soviet wage differentials. The results are similar to those found for the United States in some respects, but differ in that they find large returns and penalties to political behaviour external to the firm. Gregory and Collier (1988) use the same data to examine the determinants of unemployment in the Soviet Union. Graeser (1988) uses emigrant data to estimate the human capital model in a centrally planned economy. While these studies were of interest in the 1980s they are unlikely reflect conditions today and can be used only as a basis for comparison with changes during the transition period. Since the break-up of the Soviet Union there have been a number of studies of the Russian labour market and earnings determinants using individual and household data collected from the first rounds (1992 3) of the Russian Longitudinal Monitoring Survey (RLMS). Foley (1995), for example, uses the RLMS information to analyze patterns of worker transitions between labour market states from 1992 to Newell and Reilly (1996) present estimates for wage equations and the gender wage gap for Russia using 1992 RLMS data. Mroz and Popkin (1995) use the first round of data from the RLMS to examine the poverty level of Russian households. No published studies to date have used the latest rounds (1994 6) of the RLMS to investigate wage determinants and human capital models. There have also been a number of similar studies of wage structure and earnings determinants in other transitional economies. Vecernik (1995) and Sakova (1996), for example, investigate the change in wage determinants, education and experience in the Czech and Slovak Republics. Rutkowski (1997) analyzes wage determinants in Poland. Orazem and Vodopivec (1995) calculate returns to education and experience for Slovenia. Kollo (1996) provides evidence for wage determinants for Hungary, as do Earle and Oprescu (1993) for Romania. Our estimates of human capital functions in Russia will be analyzed with reference to similar research done by other economists as applied to countries in transition. THE DATA The data examined in this study are taken from the Russian Longitudinal Monitoring Survey (RLMS). The RLMS is a household and individual based survey designed to measure systematically the effects of Russian reforms on economic well-being of households and individuals. The first representative sample was therefore drawn in the Russian Federation. 1 The RLMS data contain results of two longitudinal surveys covering more than people during (rounds 1 4) and (rounds 5 7). This information 1 M. Swafford et al. Sample of the Russian Federation Rounds V, VI, and VII of the Russian Longitudinal Monitoring Survey. Technical Report. March,

8 Investment in human capital under economic transformation in Russia consists of household and individual data on size, sources and structure of income and expenditures, employment, time allocation, level of education, health disabilities and other characteristics (more than 500 variables). It is well suited for the purposes of our project, and allows us to check the main assumptions of the human capital theory related to the economic transformation in modern Russia. The data employed in this research are restricted to rounds 1 and 5 7. Round 1 is a cross-section of 6500 randomly selected households across Russia conducted from July to November It contains the data necessary to estimate cross-section wage equations, which can be used as a baseline against which wage equations for subsequent years can be measured. The second phase (1994 6) is more important for us, because it tracks the same set of households over time. These multiple interviews allow us to examine changes over time in labour market earnings and returns to human capital. Unfortunately the original RLMS data contain little information on firm-specific characteristics that may be important for human capital functions. It has only crude measures of ownership, the size of enterprise and the year when the enterprise was established, and no information on the firm s industry is included in the original data. For the purpose of examining firm-specific earnings, we used information provided by the respondents on their employers that was not part of the original data set to identify individual firms and their industries. An important side-benefit of this was the discovery that respondents working at the same enterprise sometimes provided different answers to questions about the firm. We have cleaned all the original firm variables (size, ownership and founding date) to make them consistent. On this basis, we have coded the industry (5-digit OKONH) for 95 per cent of the employed respondents in This enabled us to analyze returns to human capital controlling for different firm-specific characteristics: industry, ownership, type of enterprise and share of firm employment in the local labour market. Table A1.1 shows the main differences between RLMS and Goskomstat s distribution of employment across industries. Overall, the percentage distribution of employment in both data sets is approximately the same. but in the RLMS data the share of representatives from food, trade and commerce industries is larger in comparison to Goskomstat data. DESCRIPTION OF VARIABLES The RLMS data clearly provide the basis for detailed analysis of the standard human capital model developed by Mincer (1974). The principal variable in this model is earnings in log form. But it should be emphasized that earnings of Russian workers can be measured in many ways, taking into account such phenomena of the transition economy as multiple jobholding, in-kind payments, income from self-employment and arrears of wages. 8

9 1. General description of the research project The RLMS data (rounds 5 7) allow us to use at least three different measures of earnings of Russian workers: 2 1. Monthly earnings received in the form of wages, bonuses, grants, benefits, revenues and profits at the primary place of work in the reference month. 2. Monthly total earnings in the form of: (a) wages, bonuses, revenues and profits at the primary and secondary places of work; (b) in-kind payments; (c) income from individual economic activity (self-employment) in the reference month. 3. Monthly paid and owed earnings at the primary place of work, including in-kind payments and money, which for various reasons was not paid on time. Unfortunately, RLMS data does not contain information on contractual wages (permanent labour income), which is a more appropriate measure for estimating the classical earnings function. Owing to the high level of wage arrears and non-regularity of wage payments, actual paid earnings are substantially different from permanent earnings in any particular month. The high inflation over the interview period may be also a source of earnings measurement error. This error could be serious for in particular, when the average monthly rate of inflation measured through the Consumer Price Index (CPI) was 15 per cent. We adjusted the earnings data for inflation by using monthly CPI for However, we chose not to adjust the monthly earnings data for inflation for , for the following reasons. First, most of the respondents (75 per cent) were interviewed during one month. Second, the rate of inflation was relatively low (November 1995 = 4.5 per cent, October 1996 = 1.2 per cent). Third, monthly inflation adjustment can create additional measurement error, because the real earnings of people who were interviewed at the 2 It should be noted that the design of questionnaire in round 1 was different from that in rounds 5 7. There was no information on owed earnings in Two measures of earnings were used. First, a log of monthly earnings from the primary workplace in the reference month (after taxes but not including pensions, bonuses, welfare payments and subsidies). Second, a log of monthly total earnings in the form of: (a) wages and bonuses from the primary workplace; (b) additional earnings from other places of work, including bonuses, subsidies and welfare; (c) income from all individual economic activity (self-employment) in the reference month. 3 The monthly rate of inflation for the five months of the interview period in 1992 fluctuated from 8.6 per cent in August to 22.9 per cent in October. For the three months of the fifth round interview period, the monthly inflation rate was in range of per cent (Review of the Russian Economy, 1997: 235 6). 9

10 Investment in human capital under economic transformation in Russia beginning of the second month of the survey will be under-estimated in comparison with earnings of those respondents who had an interview at the end of the first month. Finally, the estimation of the standard earnings equation for Russian condition may be distorted owing to considerable regional differences in price and income levels. In order to eliminate these regional differences we have applied the deflation procedure of individuals earnings by using the regional CPI for The other main variables in the standard human capital model include years of schooling (or level of education), labour market experience and tenure or experience with current employer: 1. The variable SCH accounts for years of schooling adjusted for actual level of education. Each educational category corresponds to the average number of years of schooling required to get a certain level of education. 2. The variable EXP denotes potential labour market experience. Since RLMS data did not record a worker s actual labour force experience, a transformation of workers age was used as a proxy for experience given by EXP = AGE - SCH The variable TEN denotes years of experience with a current employer at the primary job, computed on the basis of the question: Since what year and month have you been working at this place? This variable is available only for rounds 5 7. The other variables will be described in the relevant sections of this report. THE SAMPLE STRUCTURE The size of the original sample varies across the rounds of the survey individuals responded to the round 1 individual-level adult questionnaire and only 8342 adult individuals participated in round 7. Depending on the purpose of the project, we used several subsamples. First, our focus was on employees, and after the elimination of unemployed and OLF individuals, we were left with about 5000 employees. Table A1.2 provides some summary statistics drawn from the RLMS for the employed sample. In order to estimate wage equations, the employed sample was also restricted, excluding those employees on whom all required data on earnings and hours of work were incomplete or inconsistent. 4 As a 4 The merged file of the three data sets for rounds 5 7 was checked as to whether characteristics of an individual were consistent at three points in time; simple cross tabulations were used. Respondents with inconsistent values on basic personal characteristics (gender, age and level of education) were also excluded from the employed sample. 10

11 1. General description of the research project result, we were left with three-fifths of the employees. The basic summary statistics displayed in Table A1.2 show that the differences in characteristics between the employed sample and the sample of workers who received earnings at a primary job are not significant, and our samples have roughly the same gender, education, age and occupation composition. Finally, in the third part of this project our focus was on labour market transitions and flows of individuals between various labour market states from 1995 to For this purpose, the original sample was restricted to those respondents who participated in both rounds 6 and 7. The results should thus be interpreted bearing in mind that the resulting database is not completely random due to attrition between the interview dates and migration. Of the 8587 individuals answering the adult individual-level questionnaire in round 6 and the 8342 in round 7, only 6666 had valid responses at both times and form the basis for this analysis. 5 5 Much of the decrease in sample size is due to non-response by individuals for the questions of interest. A brief comparison of the demographics of people lost due to non-response revealed that the average age, the distribution of educational levels and the gender breakdown were quite similar to the persons remaining in the panel. 11

12 Investment in human capital under economic transformation in Russia 2. ESTIMATES OF PRIVATE RATES OF RETURN TO HUMAN CAPITAL This part of the research analyzes the effects of investment in schooling and experience on the level of earnings during the transition period in Russia. Our research is aimed at determining the the changes in returns to human capital over the period of transformation. We first discuss the initial conditions and returns to human capital in the Soviet period. We then analyze the main changes in the structure and dynamics of returns to schooling. The third section studies returns to experience, and we then decompose the portion of earnings variation attributable to inter-firm and intra-firm factors. Finally, we use the cleaned data with industry coding to investigate a number of hypotheses concerning the firm and regional characteristics associated with the level of earnings. Our final specification of earnings function includes three types of wage determinants: a vector of individual variables (education, gender, experience and tenure), a set of regional dummies and a vector of various firm-specific characteristics such as industry, ownership and share in the local labour market. THE INITIAL CONDITIONS AND RETURNS TO HUMAN CAPITAL IN THE SOVIET PERIOD The former socialist system of labour compensation was based on an idea of state ( public ) ownership of the labour force and labour effort. In this framework: 1) the labour force is distributed and allocated across industries and regions by central planning 2) the government itself bears all expenses of education and on-the-job training 3) all results of production belong to the government, so labour income should be regulated by the government and it determines the size of nominal and real wages. This concept gave a theoretical basis for the system of centralized wage-setting, which was realized through various phenomena of the centrally planned economy: a) a tariff wage scale for each job category b) regional wage coefficients, designed to compensate workers for taking jobs in regions with bad weather and ecological conditions c) centrally or regionally planned distribution of many important public goods such as housing, kindergartens, medical services and deficient commodities. 12

13 2. Estimates of private rates of return to human capital Consumer, producer and worker expectations were formed in a world of stable prices, wages, labour demand and labour supply. The equalizing principle of the income distribution became the strongest stereotype of Soviet labour management. Government compensation policy decisions were mostly aimed at attracting a new labour force to the armaments industry or enterprises with poor working conditions. The connection between earnings and labour effort became weaker, which strengthened the role of informal ( shadow ) labour incentives and rewards: right of entry to the channels of distribution of deficient commodities, access to the shadow fields of power, hidden social nets, opportunity to obtain unearned incomes, etc. As a result of the centralized wage-setting system, the earnings of workers were poorly correlated with their education, and the system imposed relatively small or even perverse returns to human capital. This conclusion was bolstered by the empirical studies of Graeser (1988) and Gregory and Kohlhase (1988). They investigated the determinants of Soviet earnings from the Soviet Interview Project (SIP), consisting of almost 2800 interviews with Soviet Jewish emigrants to the United States between 1979 and The principal findings of the SIP investigations can be generalized in the following statements: 1. The return to education is low for Soviet workers. Gregory and Kohlhase (1988) found that only high-level manpower that had completed higher education yields a positive rate of return. Graeser s (1988) estimates of the returns to added years of schooling vary from 2.3 per cent for secondary education to 5.0 per cent for a university degree. 2. The Soviet gender earnings gap is about 20 per cent, holding other factors including occupation constant; without occupation held constant, Soviet women earn from 22 to 29 per cent less than men. 3. Returns to experience are lower than in market economies. Gregory and Kohlhase estimate the rate of return on one more year of experience as 2 3 per cent. Empirical evidence that uses RLMS data drawn from the 1992 rounds also suggests relatively modest rates of return to education 6. As Newell and Reilly (1996) emphasize: these low rates may more accurately reflect the consequences of egalitarian policies designed to restrict wage disparity across individuals. The tariff system and ideological preferences in setting returns to education and skills have now disappeared; workers have been assigned the responsibility for finding a job. Wage and prices have been allowed to adjust to market forces. We would expect unconstrained wage- 6 Similar research done for several Eastern European countries also shows relatively low returns to schooling under central planning (see Rutkowski, 1997, for Poland; Orazem and Vodopivec, 1995, for Slovenia; Flanagan, 1995, and Vecernik, 1995, for the Czech Republic). 13

14 Investment in human capital under economic transformation in Russia setting and structural change to shift returns in favour of the more educated individuals. At the same time, current changes in labour force composition, devaluation of some skills, a declining supply of skilled jobs and unemployment growth among educated and experienced people are causing a number of opposite tendencies which account for the declining returns to human capital over the transformation period. RETURNS TO EDUCATION Traditionally, the rates of return to human capital are measured on the base of the standard Mincer earnings function of log-linear form: lnw = β 0 + β 1 SCH + β 2 EXP + β 3 EXP 2 +β 4 TEN + β 5 TEN 2 + ε The dependent variable (log of earnings) takes on three forms: a log of hourly real earnings received at the primary place of work in the reference month, a log of hourly real earnings from all jobs and a log of hourly paid and owed earnings at the primary place of work. The schooling coefficient, β 1, provides an estimate of the rate of return to education which is assumed to be constant in this specification. The schooling variable (SCH) is calculated by taking the years needed on average to get the degree reported in the survey. The experience variable (EXP) is calculated as age - schooling - 6 and denotes the potential labour market. The quadratic experience terms, EXP and EXP 2, whose coefficients, β 2 and β 3, are, respectively, positive and negative, capture the concavity of the observed earnings profile. The tenure coefficients, β 4 and β 5, provide an estimate of the returns to specific human capital. The tenure variable (TEN) denotes years of experience with a current employer at a primary job, computed on the basis of the question Since what year and month have you been working at this place? In order to distinguish returns to various educational levels we use another specification of the earnings equation in the form: lnw = β 0 + β 1 UNIV + β 2 TECH + β 3 PTU + β 4 SEC + β 5 EXP + β 6 EXP 2 +β 7 TEN + β 8 TEN 2 + ε; where UNIV = the dummy for a university degree, TECH = the dummy for a technical school, PTU = the dummy for a vocational school and SEC = the dummy for a general secondary school, with elementary education as the omitted category. The estimation of the earnings function enables us to find the rates of return to schooling, experience and specific human capital (or the tenure effect). Tables A2.1 A2.6 present the first empirical results of the regression analysis of factors determining the level of real earnings in Russia for

15 2. Estimates of private rates of return to human capital The estimates of the Mincer earnings equation for RLMS data show that the average rate of return to schooling in Russia (regression coefficient on SCH) is 6 8 per cent of the increase in real earnings for each additional year of schooling, holding other variables except occupation constant. These figures are on average higher than returns to schooling computed at the beginning of the economic reforms (1992) and in the Soviet period. Estimated returns to education support our initial hypothesis that the transition to the market economy shifts returns in favour of more educated individuals. Selected Papers J.Rutkowski (Poland) J.Vecernik (Czech Republic) P. Orazem and M. Vodopivec (Slovenia) Variables Years of schooling Years of schooling Vocational School Middle School University Table 2.1. Returns to Schooling in Transition Economies, Selected Countries, Socialist period Returns to Schooling (OLS Estimates) Post-socialist period 0.05 (1987) (1992) ( ) Male (1988) Female (1988) (1987) (1987) (1987) Male (1992) Female (1992) (1991) (1991) (1991) Sources: Orazem, Peter, and Milan Vodopivec (1994); Rutkowski Jan (1997); Vecernik J. (1995) Our conclusion also corresponds with the findings of other researchers in Eastern Europe. Table 2.1 shows the significant increase in returns to education in selected Eastern European countries from the socialist period to the early stage of transition. Figures 2.1 and 2.2 illustrate age earnings profiles for We can see that education in Russia results in enlarged flows of earnings and that the average earnings of more educated workers exceed those of less educated workers. The earnings profiles of more educated workers also rise more rapidly than those of less educated workers. 15

16 Investment in human capital under economic transformation in Russia Figure. 2.1: Age-Earnings Profiles by Gender, 1995 Predicted Earnings, Primary Job Secondary Education, Males Secondary Education, Females University Degree, Males University Degree, Females Age Categories Fig. 2.2: Age-Earnings Profiles by Gender, Predicted Earnings, Primary Job Age Categories Secondary Education, Males Secondary Education, Females University Degree, Males University Degree, Females 16

17 2. Estimates of private rates of return to human capital The age earnings profiles of females display similar overall characteristics, but lie significantly below those of men. Figures 2.1, 2.2 and Table 2.7 also indicate that there is a large difference between males and females in rates of return to schooling. Although the female rate of return to schooling was higher than the male at the starting point of the reforms and in the Soviet period 7, during the period of transformation the male rate of return diminished at a more moderate rate. These findings are consonant with the hypothesis of Orazem and Vodopivec (1995) that the transition led to lower differences in the pricing of male and female characteristics. They also find that women have had higher marginal returns to education and steeper returns to experience than men, but that after the transition the male and female earnings structure became much more similar Figure 2.3: Percentage Differences in Total Earnings, Men, Russia Percentage Change Year Elementary School Technical School PTU with a Secondary Education University Degree At the same time our estimates presented in Table A2.1 and Figure 2.3 show a clear pattern of decreasing rates of return to schooling over the period of transformation, from 7.8 per cent in 1994 to 6.2 per cent in The main question that ought to be answered is 7 Graeser (1988) shows that in the Soviet period women had relatively higher returns to schooling. This phenomenon can be explained by the fact that Russian males had more opportunities to receive a high salary without investment to education. For Russian women, investment in education was one of a few factors which assisted in reducing the gender wage differentials. 17

18 Investment in human capital under economic transformation in Russia whether this tendency is long-term or short-term. First of all we should note that our starting hypothesis explaining the difference in returns to schooling between the two periods of the Russian history does not mean that an unconstrained wage-setting system provides rates of return to schooling that increase constantly over time: we are dealing with a jump, not with continuous growth of returns to schooling. The common explanation of increases in returns to schooling over the 1980s in the United States is a rise of demand for skilled jobs. But do we have any reason to apply this idea to the current situation in the Russian labour market? The answer is no. In modern Russia, the demand for skilled jobs is decreasing relative to the demand for unskilled jobs: there is a significant disproportion between the available supply of skills and the firm demand for skills. As we have already stressed, the previous system of education was mostly directed to the training of narrow-skilled specialists for particular industries, and this narrow education does not develop the skills and knowledge which are now demanded by the market economy. Table 2.2. Occupational Structure, by Level of Education 1996 ELEM SEC PTU TECH UNIV Officials & Managers Professionals Technicians Clerks Service Workers Skilled Agricultural Workers Craft and Related Trades Operators and Assemblers Unskilled Occupations Army Source: Russian Longitudinal Monitoring Survey. Notes: The shaded area reflects people whose university degree does not correspond to their occupation. 18

19 2. Estimates of private rates of return to human capital Table 2.2 shows that almost 20 per cent of people with higher education are employed in occupations with lower educational requirements. These specific features of the labour force structure can cause rates of returns to schooling to decline. RETURNS TO EXPERIENCE Experience and tenure effects on earnings are relatively small compared to data from other countries. As we can see from Tables A2.1с A2.6, the average rate of returns to experience, using the Mincer methodology, is 1 2 per cent in Russia. The tenure effect is negligible and statistically insignificant. The small experience effect could be caused by the changing nature of the Russian economy that rewards younger, more mobile, more active and more adaptive people. If this hypothesis is true, we should expect that returns to experience should be positive and relatively high for those who work at state-owned enterprises while the new private sector should demonstrate negligible returns to experience. To test this hypothesis we ran four earnings regressions for different types of firm in our restricted sample: de novo firms (defined as having a founding date after 1990) state-owned firms privatized firms former collective and state farms. Table 2.3. Regression Coefficients on Experience and Education, by Type of Ownership De Novo Firms EXP (1.350) EXP ( 0.998) SCH 0.084*** (3.579) Notes: *** significant at the 1 % level ** significant at the 5% level * significant at the 10% level Privatized Firms 0.031** (2.117) ( 1.46) 0.054*** (2.586) State-Owned Firms 0.029** (2.206) *** ( 2.837) (1.327) Collective Farms (1.400) * ( 1.685) (0.599) 19

20 Investment in human capital under economic transformation in Russia The results provide support for this hypothesis: there is a positive and significant experience effect in the public and privatized sectors. At the same time in the new private sector we can observe a relatively small experience effect in each year (Table 2.3). The table shows results of OLS estimates where log of hourly wages at primary job is dependent variable. Other controls included in the regression are gender and years dummies. It should also be noted that de novo firms are estimated to have returns to education higher than privatized and state-owned firms. Rutkowski (1997) draws a very similar picture for Poland, showing that in the private sector the return on one additional year of schooling is almost one point higher than in the public sector. Finally, to investigate the experience effect, we again refer to age earnings profiles. The estimated age earnings profiles illustrated by Figures 2.1 and 2.2 also support the contention that the new market economy rewards younger people. The peak of earnings shifted from in 1992 to in In the United States, average earnings increase until age and remain constant over the following 10 years while Russian age earnings profiles show a more rapid decrease in earnings for middle-aged people. Our results are consistent with the other parallel research in Eastern Europe: the returns to experience tend to decline substantially over the transformation period. Rutkowski (1997), for example, observes the same tendency in Poland: Experience lost much of its importance in determining earnings levels. The rate of return on one more year of experience fell from over 3 per cent in the late 1980s to less than 2 per cent in the early 1990s. This probably indicates that experience gained under previous economic conditions is now of lesser value. As stated by Flanagan (1995), who found a similar effect for the Czech Republic, recent labour market experience is more valuable than experience acquired under central planning. However, we suspect the tendency of declining returns to experience to be temporary. We would expect that the accumulation of new experience and specific human capital from work in the market economy should raise the returns to experience in the future. The subsequent rounds of the RLMS will allow us to validate this hypothesis. EARNINGS FUNCTIONS WITH FIRM FIXED-EFFECT From the estimated earnings functions we can conclude that the explanatory power of our model is low relative to the numerous earnings equations estimated for other countries. The poor performance of the Mincer equations highlights the role of unobservable factors in wage determination in Russia. Moreover, R 2 is declining over the time in each specification 20

21 2. Estimates of private rates of return to human capital of the model (Table 2.4). This phenomenon corresponds with the findings of Vecernik (1995) and Sakova (1996), who also noticed that demographic characteristics such as gender, age or education are becoming considerably less important in the determination of wages in transition economies. Table 2.4. Earnings Functions with Firm Fixed-Effect, Restricted Sample, Independent Variables Standard Earnings Equation MALE 0.170*** (3.280) SCH 0.074*** (6.285) EXP 0.018** (2.349) EXP ** ( 2.085) YEAR *** ( 3.939) YEAR *** ( 3.624) CONS 1.646*** (10.009) FIRM DUMMIES (135 firms) Pure Firm Fixed Effect Model 0.264*** ( 5.017) 0.295*** ( 5.184) 2.793*** (81.629) F(134, 1679) = Firm Fixed Effect Estimates of Earnings Function 0.165*** (3.747) 0.039*** (3.912) 0.027*** (4.105) 0.001*** ( 3.730) 0.027*** ( 5.156) 0.298*** ( 5.317) 1.965*** (13.931) F(134, 1675) = N=1816 R 2 =0.046 R 2 =0.438 R 2 =.455 Notes: *** significant at the 1 % level ** significant at the 5% level * significant at the 10% level. 21

22 Investment in human capital under economic transformation in Russia We might expect that instead of personal characteristics, firm performance, job features and the peculiarities of local labour markets would determine earnings. To investigate this issue, we focus on the question of the extent to which earnings appear to be a function of firmspecific characteristics. We anticipate that inter-firm variation is much more important in determining the earnings of Russian workers because of the highly diverse firm performance, firm position in the market, local tax policy and other inter-firm differences. Table 2.5. Earnings Functions with Region Fixed-Effect, Restricted Sample, Independent Variables Stan dard Earni ngs Equa tion MALE *** (3.28 0) SCH ** (6.28 5) EXP ** (2.34 9) EXP ** ( ) YEAR Pure Region Fixed Effect Model 0.255*** ( 4.861) Region Fixed Effect Estimates of Earnings Function 0.193*** (4.389) 0.031*** (2.987) 0.028*** (4.332) 0.001*** ( 4.291) 0.255*** ( 4.935) 22

23 2. Estimates of private rates of return to human capital *** ( ) YEAR *** ( ) CONS *** ( ) REGION DUMMIES (96 regions) N=1816 R 2 = Notes: *** significant at the 1 % level ** significant at the 5% level * significant at the 10% level *** ( 4.791) 2.782*** (80.879) F(95,1718) = *** ( 4.880) 2.053*** (14.510) F(95,1714) = R 2 =.387 R 2 =.406 To compare inter- and intra-firm variation in earnings, we utilized a special sub-set of respondents employed in a firm with at least four employee-respondents who worked last month and received positive wages at their primary job. Our first step is to regress the log of hourly wages on individual variables (male, years of schooling and experience) and firm dummies, separately and together (see Table A2.2). R 2 shows that firm wage differentials account for 43.8 per cent of wage variation, while the individual characteristics appear to have little significance, taken separately or as a group. Firm-specific characteristics clearly dominate over individual characteristics in determining the wages of Russian workers. We can also observe changes of coefficients in the standard earnings equation after including firm dummies. Controlling for inter-firm wage differentials, the experience term became statistically more important while education lost much of its significance. This means that highly educated people are more likely to be hired 23

24 Investment in human capital under economic transformation in Russia in the firm with higher average wages, but having been hired in the given firm there is no great variation of wages depending on people s education. The next step is to run the same fixed-effect regressions on region dummies separately and together with individual characteristics. Table 2.5 shows that regions also add a substantial portion of explanatory power of the model. From this analysis we can conclude that individual variation contributes the smallest portion of wage variance in Russia and that wage variation is primarily due to two factors: regional and firm differentials. THE EXTENDED EARNINGS FUNCTION This section shows the estimates of earnings equations from a closer look at the firm and region characteristics in our sample. In the full sample we were able to use information on firm characteristics available from the RLMS and our industry coding. Of particular interest are industry differences, ownership categories and size of enterprise, share of firm employment in the local labour market and several regional characteristics (set of regional dummies, level of unemployment and hiring rate). Table 2.6 shows that human capital variables become less important in determining wages after controlling for firm and region characteristics, even though a degree from university and technical school still provides a positive wage gain. It is interesting to note that the net gender wage gap falls substantially to per cent as a result of extending the standard wage equation. This is due to the fact that gender differences in wages are neutralized, to a certain extent, by putting the variables characterizing an individual belonging to a certain industry and occupation into the regression analysis. 24

25 2. Estimates of private rates of return to human capital Table 2.6. INDIVID CHARS. OCCUPATION DUMMIES REGION DUMMIES Extended Earnings Equation, 1996 Hourly Wages Primary Job All Jobs dependent variable Coeff. t Coeff. t MALE 0.187*** *** Secondary School PTU Technical School 0.216*** ** University 0.327*** ** EXP * EXP ** Officials and Managers 0.579*** ** Professionals 0.364*** *** Technicians 0.324*** *** Clerks Service Workers Agricultural Skilled Workers Craft 0.174** ** Operators 0.227*** *** Army Moscow and St. Petersburg 0.168** *** North West Central Region 0.177** *** Volga Ural *** ** Western Siberia *** *** Eastern Siberia

26 Investment in human capital under economic transformation in Russia Hourly Wages Primary Job All Jobs dependent variable Coeff. t Coeff. t INDUSTRY DUMMIES OWN LOCAL CHARS Energy 1.031*** *** Fuel 1.112*** *** Metallurgy 0.831*** *** Chemicals 0.581*** *** Machine Building 0.323*** *** Military Complex 0.225* *** Wood & Building Materials 0.320** *** Light and Food 0.659*** *** Transport 0.718*** *** Construction 0.749*** *** Trade 0.527*** *** Commerce 0.713*** *** Housing 0.597*** *** Health Services * Social Services ** Government 0.588*** *** Other Industries 0.687*** *** Domestic Firms ** Foreign Firms 0.220* De Novo Firms 0.208*** *** Share 0.1-1% * % ** ** >10% ** *** Missing ** *** Unemployment ** *** Hiring Rate 0.066*** *** CONS 0.678** ** N R-squared

27 2. Estimates of private rates of return to human capital Notes: *** significant at the 1 % level; ** significant at the 5% level; * significant at the 10% level. Omitted categories: unskilled occupations, Northern Caucasus among regions, agriculture and forestry among industries, state-owned firms and share of firm employment less than 0.1%. Among individual factors, occupation dummies play a substantial role in earnings determination. Officials and managers are estimated to have a higher level of hourly wages, while clerks, service and unskilled workers belong to lower-paid group of employees. Among the measures of firm-specific characteristics, the industry dummies are highly significant, which demonstrates the importance of the addition of these variables to the RLMS data set. We can observe a high differentiation of wages across industries: holding other variables constant the earnings of workers in the fuel industry are 111 per cent higher than the earnings of those employed in forestry and agriculture. Table 2.6 provides evidence that employees in education, culture, science and health services have some of the lowest levels of wages. The results also show the impact of some categories of ownership, which we have defined on the basis of our questionnaire. The omitted category is state-owned enterprises. Domestic (privatized) firms are insignificantly different from state-owned firms in determining wages. At the same time foreign and de novo private firms (defined as having a founding date after 1990) are estimated to have the strongest positive impact on hourly earnings. The estimates confirm the importance of these characteristics of the local labour market. The unemployment rate is negatively associated with earnings, but the hiring rate has a positive impact on earnings, suggesting that regions with a lower demand for labour and fewer outside options in the local labour market tend to have lower wages. The variable representing the proportion of firm employment in the local labour market (SHARE) can be considered as a proxy of firm monopsonistic power. The negative and highly significant coefficient is also consistent with outside options considerations. The results show that firms with a high proportion in the local labour market have a much lower level of wages. 27